Im guessing here , but what im thinking your asking is, "hey my intank fuel pump has gone bad can I substitute an external fuel pump for it on my throttle body injected vehicle " ??? does this sound close ?
if so then heres what I know about em.
the intank pumps don't require a fuel circulation loop because they use the fuel in the tank to cool the pump at low flow times (idle) , if you were to use an external pump it [pressure would have to be close to the intank model (50 to 80 psi) and in the interest of safety all the connections would have to be swaged or threaded ,no hose barbs and clamps also if there isn't already installed a fuel return line would need to be plumbed in as well or pump will overheat and leak fuel , as well the old pump would have to be removed from tank as fuel flow wouldn't be enough at full throttle thru the dead pump and then a new outlet pipe would have to be fabbed up , so to answer your question if I got it right ? is yes but why would you want to you'd end up changing so much stuff it be easier to just get a new pump !!
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